Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Four Problem Solving Questions from OG 12 [#permalink]
08 Apr 2009, 14:43

1

This post received KUDOS

00:00

A

B

C

D

E

Difficulty:

5% (low)

Question Stats:

50% (00:00) correct
50% (00:00) wrong based on 2 sessions

If you know how to solve the following questions and you know how to explain your answers, please let me know. Thanks!

--------------------------------------------------------------------------------------------- 1) When positive integer x is divided by positive y, the remainder is 9. If x / y = 96.12, what is the value of y? a)96 b)75 c)48) d)25 e)12 The correct answer is: B -------------------------------------------------------------------------------------------------------- 2) If t = (1) / (2^9 * 5^3) is expressed as a terminating decimal, how many zeros will t have between the decimal point and the fist nonzero digit to the right of the decimal point? a)Three b)Four c)Five d)Six e)Nine The correct answer is: B -------------------------------------------------------------------------------------------------------- 3) If x, y, and k are positive numbers such that (x / x+y)(10) + (y / x+y)(20) = k and if x<y, which of the following could be the value of k?

a)10 b)12 c)15 d)18 e)30 The correct answer is: D ------------------------------------------------------------------------------------------------------ 4)For any positive integer n, the sum of the fist n positive integers equals (n(n+1)) / 2. What is the sum of all even integers between 99 and 301? a)10,100 b)20,200 c)22,650 d)40,200 e)45,150

Re: Four Problem Solving Questions from OG 12 [#permalink]
12 Apr 2009, 19:29

GMAT_700 wrote:

If you know how to solve the following questions and you know how to explain your answers, please let me know. Thanks!

--------------------------------------------------------------------------------------------- 1) When positive integer x is divided by positive y, the remainder is 9. If x / y = 96.12, what is the value of y? a)96 b)75 c)48) d)25 e)12 The correct answer is: B --------------------------------------------------------------------------------------------------------

Re: Four Problem Solving Questions from OG 12 [#permalink]
12 Apr 2009, 19:44

GMAT_700 wrote:

If you know how to solve the following questions and you know how to explain your answers, please let me know. Thanks!

-------------------------------------------------------------------------------------------------------- 2) If t = (1) / (2^9 * 5^3) is expressed as a terminating decimal, how many zeros will t have between the decimal point and the fist nonzero digit to the right of the decimal point? a)Three b)Four c)Five d)Six e)Nine

2^9*5^3=2^6*10^3

1/2^9=0.01... 1/10^3=0.001 0.01*0.001=0.00001 Answer: B.

Re: Four Problem Solving Questions from OG 12 [#permalink]
12 Apr 2009, 20:22

2

This post received KUDOS

GMAT_700 wrote:

If you know how to solve the following questions and you know how to explain your answers, please let me know. Thanks!

------------------------------------------------------------------------------------------------------ 4)For any positive integer n, the sum of the fist n positive integers equals (n(n+1)) / 2. What is the sum of all even integers between 99 and 301? a)10,100 b)20,200 c)22,650 d)40,200 e)45,150

301-99=203 elements => 202/2=101 of them are even (99+301)/2=200 - average of these 101 elements the sum: 101*200=20200 Answer: B

Re: Four Problem Solving Questions from OG 12 [#permalink]
14 Apr 2009, 19:01

peraspera wrote:

GMAT_700 wrote:

If you know how to solve the following questions and you know how to explain your answers, please let me know. Thanks!

--------------------------------------------------------------------------------------------- 1) When positive integer x is divided by positive y, the remainder is 9. If x / y = 96.12, what is the value of y? a)96 b)75 c)48) d)25 e)12 The correct answer is: B --------------------------------------------------------------------------------------------------------

Re: Four Problem Solving Questions from OG 12 [#permalink]
14 Apr 2009, 19:25

1

This post received KUDOS

tkarthi4u wrote:

peraspera wrote:

GMAT_700 wrote:

If you know how to solve the following questions and you know how to explain your answers, please let me know. Thanks!

--------------------------------------------------------------------------------------------- 1) When positive integer x is divided by positive y, the remainder is 9. If x / y = 96.12, what is the value of y? a)96 b)75 c)48) d)25 e)12 The correct answer is: B --------------------------------------------------------------------------------------------------------

9/y=12/100 => 9/y=3/25 => 9*25/3=75 Answer: B.

Can you please expalin the problem please?

from the question stem, x/y=qy+9 also from the question stem, x/y=96.12, therefore qy+9=96*100+12 from here we can assume the ratio of 9/y=12/100 or 9/y=3/25 From here y=(9*25)/3 = 75

Re: Four Problem Solving Questions from OG 12 [#permalink]
19 Aug 2010, 06:35

--------------------------------------------------------------------------------------------- 1) When positive integer x is divided by positive y, the remainder is 9. If x / y = 96.12, what is the value of y? a)96 b)75 c)48) d)25 e)12